* {
  padding: 0;
  margin: 0;
}

.all {
  width: 100%;
  background: #cdeef7;
  overflow: hidden;
}

.all img {
  width: 100%;
  display: block;
  margin: 0 auto;
  border: 0;
  overflow-clip-margin: content-box;
  overflow: clip;
}

.tool .tooBar {
  position: fixed;
  right: 0;
  bottom: 36px;
  z-index: 9999;
}

.tool .tooBar a {
  display: block;
  width: 52px;
  height: 52px;
  margin-top: 1px;
  position: relative;
  background-position: 0 -674px !important;
  transition: background-position 1s;
  background: url(https://pic.motieimg.com/web-feature/dist/static/img/toolbar.21a529f.png) no-repeat;
  text-decoration: none;
}

.tool a:hover {
  background-position: 0 -736px !important;
}
